On Wed, 2016-06-08 at 00:01 +0000, Matthew Brincke wrote:
> I intend to fix PdfOutlineItem::InsertChild() in time for the
> impending release, so that it moves an item already present in
> the tree it's to inserted in, instead of adding it twice and
> violating the tree property (which led to the crash on Erase()
> AFAIK). Currently I'm still busy with an assignment for studies,
> sorry.
Hi,
I would not do that. A better approach might be (from my point of view)
to document that the InsertChild() requires a fresh new item to be used
as the child, and it not being assigned in any tree yet, then verify
that in the runtime and throw an exception when any of this
prerequisite is violated.
After that introduce a new method Move(), which will move (or reparent)
some part of the tree to elsewhere in the same tree. There should be
also done some runtime checks to not cause cycles in the tree and so
on.
Eventually a Copy() method to copy a subtree to a different part could
be added too, then the user would call it, instead of the current
InsertChild() and then will be able to erase the previous subtree as
well.
That way, there will be no side-effect of the InsertChild() and the
method name itself will clearly state what it does.
> Could you please wait for me? I'll try to get the fix done
> on 8th June.
I do not expect it being included in the 0.9.4, there exists a
workaround (manual copy of the subtree), if you meant to wait for you
due this. Just my opinion.
Bye,
zyx
--
http://www.litePDF.cz i...@litepdf.cz
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